Strange log report

I've been seeing this log once or twice a day, and I'm not certain st to how long it has been going on. I'm not sure what to make of it as there don't seem to be any issues that I'm aware of. Running version 10 running on Win XP Pro, on two identical machines (only one is ever on at a time), and both have the same log.
Just wondering if anyone else has come across it.